Screen command quick start guide

To create a new session, write the following with your session name instead of [session]:

screen -R [session]

This will start a new session with name [session](if not created before) in a new clean "screen".

To dettach the session just press:

Ctrl + a  (realease keys) d

To attach the screen session again, write again:

screen -R [session]

To list all the screen sessions:

screen -ls

To kill the current screen:

Ctrl + a  (realease keys) k

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Command line history

The history command can be used to list all the previous commands you have typed before. The syntax is as following:

history n

where n is the number of commands you have typed before.

Example:
This lists the last 5 commands typed before:

$ history 5
  510  cp /home/pepito/myfile /home/pepito/myfolder
  511  ls
  512  ip addr show
  513  ifconfig
  514  history 5

You can select to execute a command from the list with the following:

!n

Where n is the number of the command in the list.

Example:
This will execute the command number 511 that is the ls command:

$ !511
ls
example.txt

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Shortcuts to cut, copy & paste on a terminal command line

Ctrl + u : Deletes from the cursor back to the line start.
.
Ctrl + k : Deletes from the cursor to the end of the line.

Ctrl + w : Deletes until after the previous word boundary.

Alt + d : Deletes until before the next word boundary.

Ctrl + y : Yank/Past the previous killed text at he cursor position.

Alt + y : Yank/Past the previous previous killed text at he cursor position.

More details:
https://en.wikipedia.org/wiki/GNU_Readline

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Compress and Extract gz, .tar.gz, and .zip

Compress and Extract gz, .tar.gz, and .zip

.tar.gz:
Compress: tar -czvf file.tar.gz folder/to/compress/
Extract: tar -xzvf file.tar.gz

.tar:
Compress: tar -cvf file.tar folder/to/compress/
Extract: tar -xvf file.tar

.gz:
Compress: gzip -9 file
Extract: gzip -d file.gz

.zip:
Compress: zip file.zip folder/to/compress/
Extract: unzip file.zip

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SIOCDELRT error when try to delete a single route from route table

If you want to delete a single route from the route table, you have to specify enough parameters to make this route unique.

For example, this gives you an error, because the mask is not specified:

$ sudo route del -net 192.168.5.0
SIOCDELRT: No such process

This gives you a successful output, because the mask is properly specified:

$ sudo route del -net 192.168.5.0/24

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Git - Delete files from remote repository which are already deleted from your local filesystem

Go to the main project directory and execute:

$ git ls-files --deleted -z | xargs -0 git rm

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